npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2026 – Pkg Stats / Ryan Hefner

jupyterlab_advanced_image_viewer_extension

v1.0.7

Published

JupyterLab extension for advanced image viewing: fit-to-screen, cursor-anchored wheel zoom, drag-to-pan, and Left/Right arrow keys to move to the previous and next image in a folder

Readme

jupyterlab_advanced_image_viewer_extension

GitHub Actions npm version PyPI version Total PyPI downloads JupyterLab 4 Brought To You By KOLOMOLO Donate PayPal

A JupyterLab 4 extension that makes the built-in image viewer interactive. Images open fitted to the panel just like the stock viewer, then you can zoom with the wheel, pan by dragging, and step through a folder of images with the arrow keys - all in a single viewer tab.

Advanced image viewer

The viewer toolbar adds zoom in / out / fit controls and a help link that lists every keybinding.

Features

  • Fit to screen - every image opens scaled to fit the panel (same result as the stock viewer), and reset returns to that fit
  • Wheel zoom - scroll to zoom in and out, anchored at the cursor; zoom out as far as you like
  • Drag to pan - hold and drag to move the image at any zoom (canvas-style); the grab cursor is always available and Fit recenters
  • Toolbar controls - zoom in, zoom out, and reset-to-fit buttons on the viewer toolbar
  • Arrow-key navigation - Left and Right open the previous and next image in the same folder, advancing within one viewer instead of opening new tabs

Requirements

  • JupyterLab >= 4.0.0

Install

To install the extension, execute:

pip install jupyterlab_advanced_image_viewer_extension

Uninstall

To remove the extension, execute:

pip uninstall jupyterlab_advanced_image_viewer_extension